Thermos cup



FIG. 1 is a perspective view of a thermos cup, showing my new design;

FIG. 2 is a right side view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is another perspective view.

The broken lines in the drawings depict portions of the thermos cup that form no part of the claimed design. 

CLAIM The ornamental design for a thermos cup, as shown and described. 